[macOS] Request: Add additional playback speeds

[hmc2themaxx]

The current options for playback speed are: 0.8, 0.9, 1.0, 1.25, 1.5, 2.0. 2.5

I'd like to see these playback speeds added to the current options. 0.85, 0.95, 1.05, 1.10, 1.15, 1.20, .

If 0.05 increments aren't possible, I'd like to have 1.1, 1.2, added as optional playback speeds.

Thank you!